Today's Message Index:
----------------------
1. 06:01 AM - Re: First successful test of windscreen antenna (john dalmas)
2. 06:42 AM - Re: First successful test of windscreen antenna (Kelly McMullen)
3. 07:58 AM - Re: First successful test of windscreen antenna (AirMike)
4. 08:11 AM - Re: Antenna Location (Bill DeRouchey)
5. 08:53 AM - Re: Antenna Location (Richard Bibb)
6. 09:14 AM - Show Planes Flap Position System For Sale (Barry Marz)
7. 10:10 AM - Re: Antenna Location (MARCUS COOPER)
8. 11:27 AM - Re: First successful test of windscreen antenna (Bob Turner)
9. 11:32 AM - Re: Antenna Location (Bob Turner)
10. 11:43 AM - Re: Re: Seat Belt Tip (John Cumins)
11. 01:12 PM - Re: Re: Seat Belt Tip (David McNeill)
12. 01:40 PM - Re: First successful test of windscreen antenna (Michael Wellenzohn)
13. 02:21 PM - Re: Antenna Location (McGann, Ron)
14. 04:05 PM - Re: Starter question (Lew Gallagher)
15. 04:23 PM - Re: Re: Starter question (David McNeill)
16. 06:45 PM - Re: First successful test of windscreen antenna (Phil White)
17. 07:07 PM - Re: Re: First successful test of windscreen antenna (Linn Walters)
18. 08:32 PM - Re: Antenna Location (David Shelton)
Message 1
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| Subject: | Re: First successful test of windscreen antenna |
The antenna should be 1/2 wavelength long.
So, at 122.7 MHz, and with a speed of light at 3 x 10**8 m/sec, 1/2 of the wavelength
is 1.22m or about 48inches.
Check out this website for way more info....
http://k9erg.tripod.com/theory.htm
John Dalmas
RV10 397
working on instrument panel
--- On Sun, 11/1/09, Ralph E. Capen <recapen@earthlink.net> wrote:
> From: Ralph E. Capen <recapen@earthlink.net>
> Subject: Re: RV10-List: First successful test of windscreen antenna
> To: rv10-list@matronics.com
> Date: Sunday, November 1, 2009, 9:30 PM
> "Ralph E. Capen" <recapen@earthlink.net>
>
> Help me with this please - I had one similar - on the
> windscreen. Had it
> tested by a bunch of HAM radio guys - they said it was too
> short causing the
> SWR to be bad. I had made it longer in hopes of
> cutting it doen during
> testing. It seemed to receive OK but couldn't
> get anyone to hear me.....
>
> How long is yours?
> Have you tried it in flight?
> What led you to taping it to the center post?
> Is it insulated from the center post only by the paint?
>
> Thanks,
> Ralph Capen
> RV6A N822AR @ N06 39hrs
> Collecting a bunch of -10 parts already......
>
> ----- Original Message -----
> From: "Michael Wellenzohn" <rv-10@wellenzohn.net>
> To: <rv10-list@matronics.com>
> Sent: Sunday, November 01, 2009 4:32 PM
> Subject: RV10-List: First successful test of windscreen
> antenna
>
>
> Wellenzohn"
> > <rv-10@wellenzohn.net>
> >
> > I just wanted to share my first positive experience
> with the windscreen
> > antenna taped to the center bar. I tested it by
> holding the center bar at
> > the right angle and attached my handheld radio to it.
> I had no problems
> > listening to Zurich tower although being inside a
> concrete building.
> >
> > I glued the strip to the bar and covered it with black
> tape (see attached
> > photos)
> >
> > Cheers
> > Michael
> >
> > --------
> > RV-10 builder (avionics, wiring)
> > #511
> >
> >
> >
> >
> > Read this topic online here:
> >
> > http://forums.matronics.com/viewtopic.php?p=270494#270494
> >
> >
> >
> >
> > Attachments:
> >
> > http://forums.matronics.com//files/img_0614_124.jpg
> > http://forums.matronics.com//files/img_0612_984.jpg
> > http://forums.matronics.com//files/img_0611_181.jpg
> >
> >
> >
> >
> >
> >
> >
>
>
> Lists This Month --
> Some AWESOME FREE Gifts!)
> Raiser. Click on
> out more about
> Gifts provided
> www.aeroelectric.com
> www.buildersbooks.com
> www.homebuilthelp.com
> -Matt
> Dralle, List Admin.
> Forum -
> FAQ,
> - MATRONICS WEB FORUMS -
>
>
>
>
Message 2
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| Subject: | Re: First successful test of windscreen antenna |
Most aircraft antennas start with 1/4 wavelength, not 1/2. So 24" is
more likely to fit the space available.
john dalmas wrote:
>
> The antenna should be 1/2 wavelength long.
>
> So, at 122.7 MHz, and with a speed of light at 3 x 10**8 m/sec, 1/2 of the wavelength
is 1.22m or about 48inches.
>
> Check out this website for way more info....
>
> http://k9erg.tripod.com/theory.htm
>
>
> John Dalmas
> RV10 397
> working on instrument panel
>
>
> --- On Sun, 11/1/09, Ralph E. Capen <recapen@earthlink.net> wrote:
>
>> From: Ralph E. Capen <recapen@earthlink.net>
>> Subject: Re: RV10-List: First successful test of windscreen antenna
>> To: rv10-list@matronics.com
>> Date: Sunday, November 1, 2009, 9:30 PM
>> "Ralph E. Capen" <recapen@earthlink.net>
>>
>> Help me with this please - I had one similar - on the
>> windscreen. Had it
>> tested by a bunch of HAM radio guys - they said it was too
>> short causing the
>> SWR to be bad. I had made it longer in hopes of
>> cutting it doen during
>> testing. It seemed to receive OK but couldn't
>> get anyone to hear me.....
>>
>> How long is yours?
>> Have you tried it in flight?
>> What led you to taping it to the center post?
>> Is it insulated from the center post only by the paint?
>>
>> Thanks,
>> Ralph Capen
>> RV6A N822AR @ N06 39hrs
>> Collecting a bunch of -10 parts already......
>>
>> ----- Original Message -----
>> From: "Michael Wellenzohn" <rv-10@wellenzohn.net>
>> To: <rv10-list@matronics.com>
>> Sent: Sunday, November 01, 2009 4:32 PM
>> Subject: RV10-List: First successful test of windscreen
>> antenna
>>
>>
>> Wellenzohn"
>>> <rv-10@wellenzohn.net>
>>>
>>> I just wanted to share my first positive experience
>> with the windscreen
>>> antenna taped to the center bar. I tested it by
>> holding the center bar at
>>> the right angle and attached my handheld radio to it.
>> I had no problems
>>> listening to Zurich tower although being inside a
>> concrete building.
>>> I glued the strip to the bar and covered it with black
>> tape (see attached
>>> photos)
>>>
>>> Cheers
>>> Michael
>>>
>>> --------
>>> RV-10 builder (avionics, wiring)
>>> #511
>>>
>>>
>>>
>>>
>>> Read this topic online here:
>>>
>>> http://forums.matronics.com/viewtopic.php?p=270494#270494
>>>
>>>
>>>
>>>
>>> Attachments:
>>>
>>> http://forums.matronics.com//files/img_0614_124.jpg
>>> http://forums.matronics.com//files/img_0612_984.jpg
>>> http://forums.matronics.com//files/img_0611_181.jpg
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
>> Lists This Month --
>> Some AWESOME FREE Gifts!)
>> Raiser. Click on
>> out more about
>> Gifts provided
>> www.aeroelectric.com
>> www.buildersbooks.com
>> www.homebuilthelp.com
>> -Matt
>> Dralle, List Admin.
>> Forum -
>> FAQ,
>> - MATRONICS WEB FORUMS -
>>
>>
>>
>>
>
>
>
>
>
Message 3
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| Subject: | Re: First successful test of windscreen antenna |
I was advised by Aerotronics in Billings Mt and at least one other avionics shop
to just use a regular external antenna (which I did) for the COM. I was able
to buy a used Cessna Commant antenna at OSH two years ago for about $30-$35.
It works flawlessly. I did however use the same installation as Michael for the
NAV antenna. As I recall it is 24 or 25 inches long. I bought the Van's product
which is essentially a piece of copper foil glued to the headliner just behind
the windshield. Connect it with a piece of coax cable run thru the steel
cabin support strut I tested it's reception yesterday over the Fallon, NV - Hazen
VOR. I got good reception on all points of the compass. I was worried about
the reception driving away from the VOR when the tail cone blankets the signal,
but it worked fine.
--------
OSH '10 or Bust
Q/B Kit - phase 1
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=270586#270586
Message 4
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| Subject: | Re: Antenna Location |
That is a very bad location for the AHRS. Suggest you consider leaving the
antenna asis and move the AHRS back to the bulkhead where the rear seat bel
t shoulder cables attach. Build a shelf and sandwich it between the cable a
ttach plate and the longeron top. This will move the AHRS back away from th
e baggage compartment that will create even larger- AHRS interference dep
ending upon the variable content of the baggage.
-
Bill DeRouchey
N939SB, flying
--- On Sun, 11/1/09, McGann, Ron <Ron.McGann@thalesgroup.com.au> wrote:
From: McGann, Ron <Ron.McGann@thalesgroup.com.au>
Subject: RV10-List: Antenna Location
au>
While on the subject of Antenna location, I have top mounted (aft of the
cabin top/fuse join) and belly mounted (under the pilot seat) antennas.
I am looking at replacing/moving my top mounted antenna with another
belly mounted unit (too much interference when transmitting from the top
antenna and the GRT AHRS mounted in the 'standard location' aft and
above the battery box).
Does anyone have any experience with mounting bent whips in the wing
inpsection plates?- Pros/Cons?
cheers
Ron
VH-XRM Flying in Oz
-----Original Message-----
From: owner-rv10-list-server@matronics.com
[mailto:owner-rv10-list-server@matronics.com] On Behalf Of Linn Walters
Sent: Monday, 2 November 2009 9:18 AM
Subject: Re: RV10-List: First successful test of windscreen antenna
<pitts_pilot@bellsouth.net>
I will have two radios, and I plan on putting the antennas in each side
windshield post in the fiberglass top.- - Not the most ideal place
.....no good ground plane right there ..... but it's better than letting
them hang outside, or horizontal as in the wingtips.- I have a friend
with an RV-6 that removed his antenna that was stuck to the center bar.
Linn
Michael Wellenzohn wrote:
<rv-10@wellenzohn.net>
>
> I just wanted to share my first positive experience with the
windscreen antenna taped to the center bar. I tested it by holding the
center bar at the right angle and attached my handheld radio to it. I
had no problems listening to Zurich tower although being inside a
concrete building.
>
> I glued the strip to the bar and covered it with black tape (see
attached photos)
>
> Cheers
> Michael
>
> --------
> RV-10 builder (avionics, wiring)
> #511
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=270494#270494
>
>
> Attachments:
>
> http://forums.matronics.com//files/img_0614_124.jpg
> http://forums.matronics.com//files/img_0612_984.jpg
> http://forums.matronics.com//files/img_0611_181.jpg
>
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ey are for
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isclosure,
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Message 5
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| Subject: | Antenna Location |
I'm starting on my fuselage and want to get a head start on antenna
locations by making doubler plates, etc for future mounting as it will be
easier to drill/rivet them to the skin before they are final riveted in
place.
Along those lines I am thinking about the following and am looking for
recommendations:
Comm antennas - going with two. Will mount bent whip on bottom of fuselage
and/or top. Straight whip on top if I go that route.
If I mount both on the bottom how far apart should they be to avoid/minimize
interference? If I mount one on the top I'm thinking aft of fiberglass to
avoid need for glassing ground place into the top. Thoughts? Comments?
I like the idea of fabricating AHRS shelf in tailcone near bulkhead that
seat belt anchors attach. Plusses/minuses of this location?
Transponder - bottom of fuselage most likely opposite of center opposing
location of comm. antenna. Again what is recommendation for location to
avoid interference pattern from gear legs, etc.
Localizer/VOR antenna - again dual - thinking internal wingtip in both
wings.
GPS - inside cabin top as I saw done somewhere on here. How far from Comm
antenna if I have one of those on the top of the airplane.
XM Weather? Not sure - maybe combo GPS/SM unit mounted as above.
ADF - not going to bother.
Marker Beacom - ditto.
DME - nope. Maybe redundant GPS under cowl in front.
ELT - not sure. Smallest antenna I can find mounted coming out empennage
fairing? What sort of antenna does the 406Mhz ELTs take anyway - I need to
look that up.
Thinking is I will figure out mounting and buy antennas as I construct
airframe with actual avionics decisions coming later once I get closer. But
in general dual nav/com setup with Dual EFIS screens with some sort of
redundant third screen slaved off either or. Brands to be determined but at
least one Garmin 430 seems like one safe choice.
Comments welcome.
Richard Bibb
972-771-2598
972-835-5979 mobile
Message 6
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| Subject: | Show Planes Flap Position System For Sale |
I have a Show Planes FPS-E4 for a RV-10 For Sale for $120.00 which
includes shipping. The FPS-E4 works good and is complete; I removed
it at 120hrs. on the aircraft and installed an electronic positioning
system. Contact me direct for info. Thanks.
Do Not Archive
Barry Marz
18735 Baseleg AVE.
FT. Myers, Fl 33917
239-567-2271
blalmarz@embarqmail.com
Message 7
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| Subject: | Re: Antenna Location |
Ron,
-- Before you give up on the upper antenna you may want to consider oth
er solutions.- I have the same interference problem, but it is comming fr
om my lower external antenna, I had no issues from the roof mounted antenna
and my AHRS is in the same place as yours.- I have been meaning to call
GRT for a long time about this about shielding options or other suggestions
but keep forgetting.- Moving the AHRS might be the better option.
-
Please post if you find a successful solution.
-
Thanks,
Marcus
-
do not archive
--- On Sun, 11/1/09, McGann, Ron <Ron.McGann@thalesgroup.com.au> wrote:
From: McGann, Ron <Ron.McGann@thalesgroup.com.au>
Subject: RV10-List: Antenna Location
au>
While on the subject of Antenna location, I have top mounted (aft of the
cabin top/fuse join) and belly mounted (under the pilot seat) antennas.
I am looking at replacing/moving my top mounted antenna with another
belly mounted unit (too much interference when transmitting from the top
antenna and the GRT AHRS mounted in the 'standard location' aft and
above the battery box).
Does anyone have any experience with mounting bent whips in the wing
inpsection plates?- Pros/Cons?
cheers
Ron
VH-XRM Flying in Oz
-----Original Message-----
From: owner-rv10-list-server@matronics.com
[mailto:owner-rv10-list-server@matronics.com] On Behalf Of Linn Walters
Sent: Monday, 2 November 2009 9:18 AM
Subject: Re: RV10-List: First successful test of windscreen antenna
<pitts_pilot@bellsouth.net>
I will have two radios, and I plan on putting the antennas in each side
windshield post in the fiberglass top.- - Not the most ideal place
.....no good ground plane right there ..... but it's better than letting
them hang outside, or horizontal as in the wingtips.- I have a friend
with an RV-6 that removed his antenna that was stuck to the center bar.
Linn
Michael Wellenzohn wrote:
<rv-10@wellenzohn.net>
>
> I just wanted to share my first positive experience with the
windscreen antenna taped to the center bar. I tested it by holding the
center bar at the right angle and attached my handheld radio to it. I
had no problems listening to Zurich tower although being inside a
concrete building.
>
> I glued the strip to the bar and covered it with black tape (see
attached photos)
>
> Cheers
> Michael
>
> --------
> RV-10 builder (avionics, wiring)
> #511
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=270494#270494
>
>
> Attachments:
>
> http://forums.matronics.com//files/img_0614_124.jpg
> http://forums.matronics.com//files/img_0612_984.jpg
> http://forums.matronics.com//files/img_0611_181.jpg
>
DISCLAIMER:----------------------------------------------------------------
-----------
This e-mail transmission and any documents, files and previous e-mail messa
ges
attached to it are private and confidential. They may contain proprietary o
r copyright
material or information that is subject to legal professional privilege. Th
ey are for
the use of the intended recipient only.- Any unauthorised viewing, use, d
isclosure,
copying, alteration, storage or distribution of, or reliance on, this messa
ge is
strictly prohibited. No part may be reproduced, adapted or transmitted with
out the
written permission of the owner. If you have received this transmission in
error, or
are not an authorised recipient, please immediately notify the sender by re
turn email,
delete this message and all copies from your e-mail system, and destroy any
printed
copies. Receipt by anyone other than the intended recipient should not be d
eemed a
waiver of any privilege or protection. Thales Australia does not warrant or
represent
that this e-mail or any documents, files and previous e-mail messages attac
hed are
error or virus free.
---------------------------------------------------------------------------
-----------
le, List Admin.
Message 8
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| Subject: | Re: First successful test of windscreen antenna |
Use a half wavelength if you cut the wire in the middle, and feed each side with
the coax (center to one side, braid to the other).
Use a quarter wave length if you mount the feed end over a "ground plane" (a large
conducting surface - maybe the glare shield is large enough). Attache the
center conductor to the wire, the braid to the ground plane.
Either of these gives a reasonable match to 50 ohm coax. But nearby metal may change
the match by quite a bit, so don't be surprised if taping to the cabin support
bar doesn't match all that great. Or maybe it will, all depends on the
details. The fact that the cabin support bar is not perpendicular to the glare
shield will change things, too.
Modern receivers are very sensitive and will work with lousy antennas. The real
test is if the tower can hear you when you transmit (especially with a low powered
hand held). I can receive quite well on my handheld inside the cabin of
a 182 with just the little rubber duckie antenna; but only transmit about 3 miles
with this arrangement.
--------
Bob Turner
RV-10 QB
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=270621#270621
Message 9
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| Subject: | Re: Antenna Location |
406MHz ELT's use the standard sized 121.5 MHz antennas, because the FAA still requires
our ELT to transmit on 121.5 (even if it also does 406).
--------
Bob Turner
RV-10 QB
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=270622#270622
Message 10
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| Subject: | Re: Seat Belt Tip |
Rene
What is your source for the seat belts. And does the Back inertia reels
attach to the cabin top like the front ones do?
I had inertia reel belts in my cardinal and I loved them.
John G. Cumins
-----Original Message-----
From: owner-rv10-list-server@matronics.com
[mailto:owner-rv10-list-server@matronics.com] On Behalf Of Rene
Sent: Sunday, November 01, 2009 10:39 PM
Subject: RE: RV10-List: Re: Seat Belt Tip
Here are a couple of pictures of mine. If you would like to know more,
e-mail and pull some stuff together during the Saints game tomorrow night...
Rene at felker dot com
Rene'
801-721-6080
-----Original Message-----
From: owner-rv10-list-server@matronics.com
[mailto:owner-rv10-list-server@matronics.com] On Behalf Of Lenny Iszak
Sent: Sunday, November 01, 2009 8:44 PM
Subject: RV10-List: Re: Seat Belt Tip
--> <lenard@rapiddecision.com>
Where can I find more info about those Amsafe inertial reel belts? Any
pictures, weight, price, etc...
Thanks,
Lenny
>
> Anyone interested in the premium belts should probably consider the
AMSAFE TSOed inertial reel belts designed for the RV10; they are available
in almost any color. I took the website off line because I thought interest
had waned. John Miller, Rene Velker and myself have AMSAFE belts if you want
to discuss. There are a few others but I can not remember their names.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=270536#270536
Message 11
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| Subject: | Re: Seat Belt Tip |
www.inertialbelts.com should be restored on line in a couple of days. It has
all the info about lid mods and procedures as well as colors. I will have to
check whether there are 2009 prices there. These are TSOed as required for
the AMSAFE certified manufacturer status. AMSAFE would not design or sell
these until several mods were made to strengthen the hardpoints in the lid.
AMSAFE used my aircraft to design the belts for the RV10. There are two
lengths for the front seat as some builders wanted more girth available in
front. The standard lengths work fine in the rear because the rear attach
points are located near the hips; the front seats are adjustable and the
attach points are well to the rear of the hips except for tall people.
Except that these are four point harnesses, they look and feel just like the
back of the Boeing. There are two engineering drawings available; one for
the standard clasp and one for the rotary clasp. Extra loops can also be
supplied to prevent little people from coming though the shoulder harness in
a crash.
-----Original Message-----
From: owner-rv10-list-server@matronics.com
[mailto:owner-rv10-list-server@matronics.com] On Behalf Of John Cumins
Sent: Monday, November 02, 2009 12:42 PM
Subject: RE: RV10-List: Re: Seat Belt Tip
Rene
What is your source for the seat belts. And does the Back inertia reels
attach to the cabin top like the front ones do?
I had inertia reel belts in my cardinal and I loved them.
John G. Cumins
-----Original Message-----
From: owner-rv10-list-server@matronics.com
[mailto:owner-rv10-list-server@matronics.com] On Behalf Of Rene
Sent: Sunday, November 01, 2009 10:39 PM
Subject: RE: RV10-List: Re: Seat Belt Tip
Here are a couple of pictures of mine. If you would like to know more,
e-mail and pull some stuff together during the Saints game tomorrow night...
Rene at felker dot com
Rene'
801-721-6080
-----Original Message-----
From: owner-rv10-list-server@matronics.com
[mailto:owner-rv10-list-server@matronics.com] On Behalf Of Lenny Iszak
Sent: Sunday, November 01, 2009 8:44 PM
Subject: RV10-List: Re: Seat Belt Tip
--> <lenard@rapiddecision.com>
Where can I find more info about those Amsafe inertial reel belts? Any
pictures, weight, price, etc...
Thanks,
Lenny
>
> Anyone interested in the premium belts should probably consider the
AMSAFE TSOed inertial reel belts designed for the RV10; they are available
in almost any color. I took the website off line because I thought interest
had waned. John Miller, Rene Velker and myself have AMSAFE belts if you want
to discuss. There are a few others but I can not remember their names.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=270536#270536
Message 12
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| Subject: | Re: First successful test of windscreen antenna |
My antenna strip is about 23 inches long but plus the cable its more like 24
reception is good but I didn't try to transmit yet.
The center bar is powder coated in flat black on top of the original gray.
Mike
--------
RV-10 builder (avionics, wiring)
#511
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=270632#270632
Message 13
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| Subject: | Antenna Location |
I think there may be some misconceptions about interference caused to the Magnetometer
vs the AHRS.
I had both my magnetometer and AHRS mounted on a tray in the same location as most
other builders ie connected to rails that span the fuse longerons at the bulkhead
just forward of the cable attach points. This is well clear of the battery
and main relay which typically cause interference to the magnetometer.
Contents of the baggage compratment (eg tools or other iron content) will affect
the magnetometer but not the AHRS.
But my GRTs indicated an intermittent 'lean' during flight, and since my Comm2
antenna was within 2 feet of the AHRS and magnetometer, any tx on Comm2 caused
the attitude indication to go nuts. At the time I was contemplating a solution,
GRT advised NOT to mount the AHRS and Magnetometer close together. So I moved
the magnetometer to the left wingtip.
I seem to have cured the dose of the 'leans'. But tx on Comm2 causes the AHRS
to reboot - a much worse situation than before. I believe this is because the
AHRS is within 2ft of the Comm2 antenna.
Pushing the AHRS further aft is an option, as is moving the antennas. I was just
looking for experiences with mounting the antennas on the wing inspection plates
so I could weigh the options.
cheers
Ron
VH-XRM flying in Oz
-----Original Message-----
From: owner-rv10-list-server@matronics.com [mailto:owner-rv10-list-server@matronics.com] On Behalf Of Bill DeRouchey
Sent: Tuesday, 3 November 2009 2:51 AM
Subject: Re: RV10-List: Antenna Location
That is a very bad location for the AHRS. Suggest you consider leaving the antenna
asis and move the AHRS back to the bulkhead where the rear seat belt shoulder
cables attach. Build a shelf and sandwich it between the cable attach plate
and the longeron top. This will move the AHRS back away from the baggage compartment
that will create even larger AHRS interference depending upon the variable
content of the baggage.
Bill DeRouchey
N939SB, flying
--- On Sun, 11/1/09, McGann, Ron <Ron.McGann@thalesgroup.com.au> wrote:
From: McGann, Ron <Ron.McGann@thalesgroup.com.au>
Subject: RV10-List: Antenna Location
--> <Ron.McGann@thalesgroup.com.au>
While on the subject of Antenna location, I have top mounted (aft of the cabin
top/fuse join) and belly mounted (under the pilot seat) antennas.
I am looking at replacing/moving my top mounted antenna with another belly mounted
unit (too much interference when transmitting from the top antenna and the
GRT AHRS mounted in the 'standard location' aft and above the battery box).
Does anyone have any experience with mounting bent whips in the wing inpsection
plates? Pros/Cons?
cheers
Ron
VH-XRM Flying in Oz
-----Original Message-----
From: owner-rv10-list-server@matronics.com
[mailto:owner-rv10-list-server@matronics.com] On Behalf Of Linn Walters
Sent: Monday, 2 November 2009 9:18 AM
Subject: Re: RV10-List: First successful test of windscreen antenna
<pitts_pilot@bellsouth.net>
I will have two radios, and I plan on putting the antennas in each side windshield
post in the fiberglass top. Not the most ideal place .....no good ground
plane right there ..... but it's better than letting
them hang outside, or horizontal as in the wingtips. I have a friend with an RV-6
that removed his antenna that was stuck to the center bar.
Linn
Michael Wellenzohn wrote:
<rv-10@wellenzohn.net>
>
> I just wanted to share my first positive experience with the
windscreen antenna taped to the center bar. I tested it by holding the center bar
at the right angle and attached my handheld radio to it. I had no problems
listening to Zurich tower although being inside a concrete building.
>
> I glued the strip to the bar and covered it with black tape (see
attached photos)
>
> Cheers
> Michael
>
> --------
> RV-10 builder (avionics, wiring)
> #511
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=270494#270494
>
>
> Attachments:
>
> http://forums.matronics.com//files/img_0614_124.jpg
> http://forums.matronics.com//files/img_0612_984.jpg
> http://forums.matronics.com//files/img_0611_181.jpg
>
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Message 14
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| Subject: | Re: Starter question |
Thanks for the responses DJ and William.
After further research, this is a Kelly Aerospace MZ 4222 starter and the drive
gear disengages once the engine reaches 400 rpm. It lists for $1272 new ...
wow. Rebuilt $365 w/ $200 core charge.
Probably much heavier than the Skytec starters, but we'll see how it works.
Later, - Lew
--------
non-pilot
crazy about building
NOW OFICIALLY BUILDER #40549
Painting done!
On with wiring and avionics.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=270648#270648
Message 15
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| Subject: | Re: Starter question |
You probably ought to plan now to get the correct Skytec as they are less
than half the weight and (IIRC) have no Bendix which requires lubrication
and cleaning. If your current starter is new you may be able to trade to get
the Skytec.
-----Original Message-----
From: owner-rv10-list-server@matronics.com
[mailto:owner-rv10-list-server@matronics.com] On Behalf Of Lew Gallagher
Sent: Monday, November 02, 2009 5:05 PM
Subject: RV10-List: Re: Starter question
Thanks for the responses DJ and William.
After further research, this is a Kelly Aerospace MZ 4222 starter and the
drive gear disengages once the engine reaches 400 rpm. It lists for $1272
new ... wow. Rebuilt $365 w/ $200 core charge.
Probably much heavier than the Skytec starters, but we'll see how it works.
Later, - Lew
--------
non-pilot
crazy about building
NOW OFICIALLY BUILDER #40549
Painting done!
On with wiring and avionics.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=270648#270648
Message 16
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| Subject: | Re: First successful test of windscreen antenna |
Because the center post is attached to the airframe, it is grounded. Having your
antenna tightly attached to a grounded piece will probably de-tune it significantly,
or at the least cause an odd radiation pattern on transmit.
I expect you will not find this antenna to work at all well.
It is recommended that you install the foil strip type on the inside of the fiberglass
roof, where it is away from the metal of the airframe. Comm antennas
need to be vertically polarized, so the best location is on the door post immediately
behind the door. I have such a foil antenna for my handheld installed
there, and it works well. (But for the main Comm, I rely on an external Comant
on the belly, cause I know it will work well.)
Phil in IL, finishing at rotary engine install
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http://forums.matronics.com/viewtopic.php?p=270659#270659
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| Subject: | Re: First successful test of windscreen antenna |
Phil White wrote:
>
> Because the center post is attached to the airframe, it is grounded.
> Having your antenna tightly attached to a grounded piece will
> probably de-tune it significantly, or at the least cause an odd
> radiation pattern on transmit. I expect you will not find this
> antenna to work at all well.
>
> It is recommended that you install the foil strip type on the inside
> of the fiberglass roof, where it is away from the metal of the
> airframe. Comm antennas need to be vertically polarized, so the best
> location is on the door post immediately behind the door.
Or in front of the door. I'm going to try that place first.
Linn
do not archive
I have
> such a foil antenna for my handheld installed there, and it works
> well. (But for the main Comm, I rely on an external Comant on the
> belly, cause I know it will work well.) Phil in IL, finishing at
> rotary engine install
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=270659#270659
>
>
>
>
>
>
>
>
>
>
>
Message 18
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| Subject: | Re: Antenna Location |
We relocated my bent whip antennas to make room for my belly pod. The avionics
shop installed doublers and mounted them immediately behind the wing plates. The
particular doubler design was not easy to fabricate but it ties into the structure
and makes a very strong mount. They seem to work very well at that location
and I haven't had any trouble with my radios.
If you E-mail me (MotoPOD@gmail.com), I can try to scrounge some more detailed
photos for you. -David
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